My favorite fight is the first encounter with Hidan and Kakuzu (the fight lasts a few episodes, but starts here at 7:30 into the video). While I do enjoy the current material, I really enjoy some of the older and smaller scaled fights. No enormous, explosive techniques here, just a handful of characters trying to outsmart the others using the tools they have. It was also one of the few fights with a serious death involved. Not to say that Naruto needs more deaths, but they do help with character development and their "realization" of violence in the world. Lastly, Hidan and Kakuzu were my favorite Akatsuki pair. Kakuza had the long history back to Hashirama and Hidan has to be the coolest villain in the show when it comes to his comical vulgarity.

Sasuke VS Itachi is the first fight to come into my head.
After a bunch of episodes of Sasuke wanting to fight his brother, he finally did.
And it ended with Itachi smiling one last time and poking him on the forehead like old times.
It foreshadows that Itachi only wanted the best for his little brother- and just thinking about it brings tears to my eyes.

well my favorite fight is when jiraiya fought all the pains but unforgettably died but also like it because of the words he said before he died " In the shinobi world it's not how you live, it's how you die. A shinobi's life is not measured by how they live but rather it's measured by what they accomplished before their death. " does words where one of the greatest thing he said and i personally enjoy the fighting between student and teacher and how he risk he's life to ensure the world a better future.

Well it seems that my favorite fight has been posted multiple times. But if anything that is a testament to how good it is. I really like seeing my boyhood crush Hinata standing up for herself despite how it ends.

My favorite fight episode would have to be Itachi VS Sasuke The End episode 138

The reason why I loved this fight was because this episode had so much emotion . The clash of two brothers and the the revealing of the truth of why Itachi did the unthinkable. This episode is the beginning of Sasuke's motivation on destroying Konoha. The fighting was very beautiful! Especially with the jutsu's and the the flashbacks. The ending obviously took our breaths away and may have made so many of us tear up
T_T.

The best fight had to be the fight between Hidan and Kakazu against Kakashi and the Leaf, simply because Kakashi is cool and most of the fight scenes were animated by Shingo Yamashita and Hiroyuki Yamshita who i think are fantastic key animators.

Jiraiya Vs Pain. You finally get to see one of the legendary sanin in action in shippuden. I loved how it was a summoning war in the begining with gamaken and Pain's summon creatures. One of my favorite battles as Jiraiya readys up for his sage mode and Gamaken watches his back. Ultimate teamwork

This is my favorite battle because I like it when Naruto turns into the Nine-Tails. It is always something that I look forward to in the series. Naruto transforming and showing off his awesome Nine-Tails power. He also does the Bijuu bomb in this episode and almost crushes Orochimaru's gates.

Episode 250 Guy vs Kisame The Final Showdown!
Not the best fight ever but I'm a big Kisame fan and he used my favorite Jutsu on that Episode.
PD:Suiton Daikoudan no Jutsu
[588314]http://www.crunchyroll.com/naruto-shippuden/episode-250-battle-in-paradise-the-odd-beast-vs-the-monster-588314[/588314]

Without the shadow of a doubt my favorite fight would have to be The 6 paths of Pein vs. Jiraiya! That fight had so much emotion in it and alot was determined by it. Without this battle the leaf village would have been destroyed by Pain, Naruto would have been captured(lack of sage mode), and the series would have ended. You really got to see how much of a genus Jiraiya was in battle single handedly fighting the six paths of Pain. More importantly you truly got to see how much Naruto, Minato, and all of Jiraiyas students meant to him. Jiraiyas resolve pushed him to the very end and helped him understand that Naruto is the hero the world was waiting for. Also it was the last battle of one of series greatest heroes, who laid the road for the man naruto became, taught the 4th hokage, and without knowing it was crucial to saving the ninja world. The man, the myth, the legend (and perv!) Jiraiya!!!

My favorite fight is when Naruto fights Pain to save the village of Konoha to its inevitable destruction.
Naruto trained very hard to master sennin mode, thus inheriting the will of fire of his master Jiraya.
It was very exciting as things turned revealing that pain, (Nagato) was not a bad guy and that he had reason to end hatred among the people in the shinobi world (but the means were not adequate).
My favorite part is the end of the fight when people recognize Naruto as a hero, proving that you should never give up.

I know there's been a lot of great fights in the series, with my personal favorites being Zabuza vs. Kakashi, Hidan vs. Asuma, Jiraiya vs. Pain , Sasuke vs. Deidara ,and Sasuke vs. Itachi, but my favorite has got to be Zabuza vs. Kakashi in Naruto Season 1 - Episode 19 - The Demon in the Snow . The final battle between those too showed Zabuza's true personality and his death was truly sad. Plus we got to see Kakashi being a baddass. And it was the first episode I saw (back before i knew what anime even was)